<template>
  <MenuItem
    :name="item.path"
    v-if="!menuHasChildren(item) && getShowMenu"
    v-bind="$props"
    :class="getLevelClass"
  >
    <img v-if="getImg" :src="getImg" class="w-16px h-16px align-top" />
    <Icon v-if="getIcon" :icon="getIcon" :size="16" />
    <div v-if="collapsedShowTitle && getIsCollapseParent" class="mt-1 collapse-title">
      {{ getI18nName }}
    </div>
    <template #title>
      <span :class="['ml-2', `${prefixCls}-sub-title`]">
        {{ getI18nName }}
      </span>
      <SimpleMenuTag :item="item" :collapseParent="getIsCollapseParent" />
    </template>
  </MenuItem>
  <SubMenu
    :name="item.path"
    v-if="menuHasChildren(item) && getShowMenu"
    :class="[getLevelClass, theme]"
    :collapsedShowTitle="collapsedShowTitle"
  >
    <template #title>
      <img v-if="getImg" :src="getImg" class="w-16px h-16px align-top" />
      <Icon v-if="getIcon" :icon="getIcon" :size="16" />

      <div v-if="collapsedShowTitle && getIsCollapseParent" class="mt-2 collapse-title">
        {{ getI18nName }}
      </div>

      <span v-show="getShowSubTitle" :class="['ml-2', `${prefixCls}-sub-title`]">
        {{ getI18nName }}
      </span>
      <SimpleMenuTag :item="item" :collapseParent="!!collapse && !!parent" />
    </template>
    <template
      v-for="childrenItem in item.children || []"
      :key="childrenItem.paramPath || childrenItem.path"
    >
      <SimpleSubMenu v-bind="$props" :item="childrenItem" :parent="false" />
    </template>
  </SubMenu>
</template>
<script lang="ts" setup>
  import type { PropType } from 'vue'
  import type { Menu } from '@/router/types'

  import { computed } from 'vue'
  import { useDesign } from '@/hooks/web/useDesign'
  import Icon from '@/components/Icon/Icon.vue'

  import MenuItem from './components/MenuItem.vue'
  import SubMenu from './components/SubMenuItem.vue'
  import { propTypes } from '@/utils/propTypes'
  import { createAsyncComponent } from '@/utils/factory/createAsyncComponent'

  const SimpleMenuTag = createAsyncComponent(() => import('./SimpleMenuTag.vue'))

  defineOptions({ name: 'SimpleSubMenu' })

  const props = defineProps({
    item: {
      type: Object as PropType<Menu>,
      default: () => ({}),
    },
    parent: propTypes.bool,
    collapsedShowTitle: propTypes.bool,
    collapse: propTypes.bool,
    theme: propTypes.oneOf(['dark', 'light']),
  })

  const { prefixCls } = useDesign('simple-menu')

  const getShowMenu = computed(() => !props.item?.meta?.hideMenu)
  const getIcon = computed(() => (props.item?.img ? undefined : props.item?.icon))
  const getImg = computed(() => props.item?.img)
  const getI18nName = computed(() => props.item?.meta?.title || props.item?.name)
  const getShowSubTitle = computed(() => !props.collapse || !props.parent)
  const getIsCollapseParent = computed(() => !!props.collapse && !!props.parent)
  const getLevelClass = computed(() => {
    return [
      {
        [`${prefixCls}__parent`]: props.parent,
        [`${prefixCls}__children`]: !props.parent,
      },
    ]
  })

  function menuHasChildren(menuTreeItem: Menu): boolean {
    return (
      !menuTreeItem.meta?.hideChildrenMenu &&
      Reflect.has(menuTreeItem, 'children') &&
      !!menuTreeItem.children &&
      menuTreeItem.children.length > 0
    )
  }
</script>
